Kosmos 869 (russian: Космос 869 meaning ''Cosmos 869'') was an
uncrewed
An uncrewed vehicle or unmanned vehicle is a vehicle without a person on board. Uncrewed vehicles can either be under telerobotic control—remote controlled or remote guided vehicles—or they can be autonomously controlled—autonomous vehic ...
military
Soyuz Soyuz is a transliteration of the Cyrillic text Союз ( Russian and Ukrainian, 'Union'). It can refer to any union, such as a trade union (''profsoyuz'') or the Union of Soviet Socialist Republics (Сою́з Сове́тских Социали� ...
7K-S test. It was a somewhat successful mission. This was the third and final test flight of a new Soyuz spacecraft type 7K-S. It was designed to be a spaceship for military solo missions. At the time of the launch the program had already been discontinued. The completed spaceships were launched as uncrewed test flights:
Kosmos 670
Kosmos 670 (russian: Космос 670 meaning ''Cosmos 670'') was an unmanned Soyuz 7K-S test. It used a new and unique inclination of 50.6 degree. The experience from these flights were used in the development of the successor program Soyuz spac ...
,
Kosmos 772
Kosmos 772 (russian: Космос 772 meaning ''Cosmos 772'') was an uncrewed military Soyuz 7K-S test. It was an unsuccessful mission as only one transmitter worked. Only the 166 MHz frequency transmitter operated, all of the other normal Soyuz ...
and Kosmos 869. The experience from these flights were used in the development of the successor program Soyuz spacecraft the
Soyuz 7K-ST
The Soyuz-T (russian: Союз-T, ''Union-T'') spacecraft was the third generation Soyuz spacecraft, in service for seven years from 1979 to 1986. The ''T'' stood for transport (, ). The revised spacecraft incorporated lessons learned from the ...
.
Mission parameters
*Spacecraft: Soyuz 7K-S.
*Mass: 6800 kg.
*Crew: None.
*Launched: November 29, 1976.
*Landed: December 17, 1976 10:31 UTC.
*
Perigee
An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion.
General description
There are two apsides in any ell ...
: 209 km.
*
Apogee
An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion.
General description
There are two apsides in any el ...
: 289 km.
*Inclination: 51.7 deg.
*Duration: 17.99 days.
Maneuver Summary
*196 km X 290 km orbit to 187 km X 335 km orbit. Delta V: 15 m/s.
*187 km X 335 km orbit to 259 km X 335 km orbit. Delta V: 21 m/s.
*259 km X 335 km orbit to 260 km X 345 km orbit. Delta V: 2 m/s.
*260 km X 345 km orbit to 265 km X 368 km orbit. Delta V: 7 m/s.
*265 km X 368 km orbit to 267 km X 391 km orbit. Delta V: 6 m/s.
*267 km X 391 km orbit to 300 km X 310 km orbit. Delta V: 32 m/s.
Total Delta V: 83 m/s.
See also
*
Soyuz 7K-OK
Soyuz 7K-OK was the first generation of Soyuz spacecraft and was flown between 1967 and 1971. The 7K-OK was used for the first ferry flights to the Salyut space station program, beginning a long history of space station service that continu ...
*
Soyuz TM-25
Soyuz TM-25 was a crewed Soyuz spaceflight, which launched on February 10, 1997.The mission report is available here: http://www.spacefacts.de/mission/english/soyuz-TM-25.htm It transported Russian cosmonauts Vasily Tsibliyev, Aleksandr Lazut ...
*
Cosmos 670
Kosmos 670 (russian: Космос 670 meaning ''Cosmos 670'') was an unmanned Soyuz 7K-S test. It used a new and unique inclination of 50.6 degree. The experience from these flights were used in the development of the successor program Soyuz spa ...
*
Cosmos 772
References
Kosmos 0869
Kosmos 0869
Kosmos 0869
1976 in the Soviet Union
Spacecraft launched in 1976
1976 in spaceflight
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